quorum/raft/backend.go

107 lines
3.4 KiB
Go

package raft
import (
"crypto/ecdsa"
"sync"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
)
type RaftService struct {
blockchain *core.BlockChain
chainDb ethdb.Database // Block chain database
txMu sync.Mutex
txPool *core.TxPool
accountManager *accounts.Manager
downloader *downloader.Downloader
raftProtocolManager *ProtocolManager
startPeers []*enode.Node
// we need an event mux to instantiate the blockchain
eventMux *event.TypeMux
minter *minter
nodeKey *ecdsa.PrivateKey
calcGasLimitFunc func(block *types.Block) uint64
}
func New(ctx *node.ServiceContext, chainConfig *params.ChainConfig, raftId, raftPort uint16, joinExisting bool, blockTime time.Duration, e *eth.Ethereum, startPeers []*enode.Node, datadir string, useDns bool) (*RaftService, error) {
service := &RaftService{
eventMux: ctx.EventMux,
chainDb: e.ChainDb(),
blockchain: e.BlockChain(),
txPool: e.TxPool(),
accountManager: e.AccountManager(),
downloader: e.Downloader(),
startPeers: startPeers,
nodeKey: ctx.NodeKey(),
calcGasLimitFunc: e.CalcGasLimit,
}
service.minter = newMinter(chainConfig, service, blockTime)
var err error
if service.raftProtocolManager, err = NewProtocolManager(raftId, raftPort, service.blockchain, service.eventMux, startPeers, joinExisting, datadir, service.minter, service.downloader, useDns); err != nil {
return nil, err
}
return service, nil
}
// Backend interface methods:
func (service *RaftService) AccountManager() *accounts.Manager { return service.accountManager }
func (service *RaftService) BlockChain() *core.BlockChain { return service.blockchain }
func (service *RaftService) ChainDb() ethdb.Database { return service.chainDb }
func (service *RaftService) DappDb() ethdb.Database { return nil }
func (service *RaftService) EventMux() *event.TypeMux { return service.eventMux }
func (service *RaftService) TxPool() *core.TxPool { return service.txPool }
// node.Service interface methods:
func (service *RaftService) Protocols() []p2p.Protocol { return []p2p.Protocol{} }
func (service *RaftService) APIs() []rpc.API {
return []rpc.API{
{
Namespace: "raft",
Version: "1.0",
Service: NewPublicRaftAPI(service),
Public: true,
},
}
}
// Start implements node.Service, starting the background data propagation thread
// of the protocol.
func (service *RaftService) Start(p2pServer *p2p.Server) error {
service.raftProtocolManager.Start(p2pServer)
return nil
}
// Stop implements node.Service, stopping the background data propagation thread
// of the protocol.
func (service *RaftService) Stop() error {
service.blockchain.Stop()
service.raftProtocolManager.Stop()
service.minter.stop()
service.eventMux.Stop()
service.chainDb.Close()
log.Info("Raft stopped")
return nil
}